undo local development changes

Source/SwiftLintFramework/Extensions/NSFileManager+SwiftLint.swift

@@ -10,6 +10,7 @@ import Foundation
 
 public protocol LintableFileManager {
     func filesToLint(inPath: String, rootDirectory: String?) -> [String]
+    func modifiedDate(forFileAtPath: String) -> Date?
 }
 
 extension FileManager: LintableFileManager {
@@ -31,4 +32,9 @@ extension FileManager: LintableFileManager {
             return nil
         } ?? []
     }
+
+    public func modifiedDate(forFileAtPath path: String) -> Date? {
+        // swiftlint:disable:next force_cast
+        return try? attributesOfItem(atPath: path)[.modificationDate] as! Date
+    }
 }

Source/SwiftLintFramework/Models/Configuration.swift

@@ -34,7 +34,7 @@ public struct Configuration: Equatable {
     public let rules: [Rule]
     public var rootPath: String?              // the root path to search for nested configurations
     public var configurationPath: String?     // if successfully loaded from a path
-    public var hash: Int?
+    public var cacheDescription: String?
     public let cachePath: String?
 
     public init?(disabledRules: [String] = [],
@@ -175,7 +175,7 @@ public struct Configuration: Equatable {
             }
             self.init(dict: dict, enableAllRules: enableAllRules)!
             configurationPath = fullPath
-            hash = dict.description.hashValue
+            cacheDescription = dict.description
             self.rootPath = rootPath
             return
         } catch YamlParserError.yamlParsing(let message) {

Source/SwiftLintFramework/Models/Linter.swift

@@ -85,8 +85,7 @@ public struct Linter {
         }
 
         if let cache = cache, let path = file.path {
-            let hash = file.contents.hash
-            cache.cache(violations: violations, forFile: path, fileHash: hash)
+            cache.cache(violations: violations, forFile: path)
         }
 
         for (deprecatedIdentifier, identifier) in deprecatedToValidIdentifier {
@@ -99,10 +98,7 @@ public struct Linter {
 
     private func cachedStyleViolations(benchmark: Bool = false) -> ([StyleViolation], [(id: String, time: Double)])? {
         let start: Date! = benchmark ? Date() : nil
-        guard let cache = cache,
-            let file = file.path,
-            case let hash = self.file.contents.hash,
-            let cachedViolations = cache.violations(forFile: file, hash: hash) else {
+        guard let cache = cache, let file = file.path, let cachedViolations = cache.violations(forFile: file) else {
             return nil
         }
 

Source/SwiftLintFramework/Models/LinterCache.swift

@@ -19,24 +19,24 @@ public final class LinterCache {
     private var cache: [String: Any]
     private let lock = NSLock()
 
-    public init(currentVersion: Version = .current, configurationHash: Int? = nil) {
+    public init(currentVersion: Version = .current, configurationDescription: String? = nil) {
         cache = [
             "version": currentVersion.value,
             "files": [:]
         ]
-        cache["configuration_hash"] = configurationHash
+        cache["configuration"] = configurationDescription
     }
 
-    public init(cache: Any, currentVersion: Version = .current, configurationHash: Int? = nil) throws {
+    public init(cache: Any, currentVersion: Version = .current, configurationDescription: String? = nil) throws {
         guard let dictionary = cache as? [String: Any] else {
             throw LinterCacheError.invalidFormat
         }
 
-        guard let version = dictionary["version"] as? String, version == currentVersion.value else {
+        guard dictionary["version"] as? String == currentVersion.value else {
             throw LinterCacheError.differentVersion
         }
 
-        if dictionary["configuration_hash"] as? Int != configurationHash {
+        guard dictionary["configuration"] as? String == configurationDescription else {
             throw LinterCacheError.differentConfiguration
         }
 
@@ -44,31 +44,37 @@ public final class LinterCache {
     }
 
     public convenience init(contentsOf url: URL, currentVersion: Version = .current,
-                            configurationHash: Int? = nil) throws {
+                            configurationDescription: String? = nil) throws {
         let data = try Data(contentsOf: url)
         let json = try JSONSerialization.jsonObject(with: data, options: [])
         try self.init(cache: json, currentVersion: currentVersion,
-                      configurationHash: configurationHash)
+                      configurationDescription: configurationDescription)
     }
 
-    public func cache(violations: [StyleViolation], forFile file: String, fileHash: Int) {
+    public func cache(violations: [StyleViolation], forFile file: String) {
+        guard let lastModified = FileManager.default.modifiedDate(forFileAtPath: file) else {
+            return
+        }
         lock.lock()
         var filesCache = (cache["files"] as? [String: Any]) ?? [:]
         filesCache[file] = [
             "violations": violations.map(dictionary(for:)),
-            "hash": fileHash
+            "last_modified": Int(lastModified.timeIntervalSinceReferenceDate)
         ]
         cache["files"] = filesCache
         lock.unlock()
     }
 
-    public func violations(forFile file: String, hash: Int) -> [StyleViolation]? {
+    public func violations(forFile file: String) -> [StyleViolation]? {
+        guard let lastModified = FileManager.default.modifiedDate(forFileAtPath: file) else {
+            return nil
+        }
         lock.lock()
 
         guard let filesCache = cache["files"] as? [String: Any],
             let entry = filesCache[file] as? [String: Any],
-            let cacheHash = entry["hash"] as? Int,
-            cacheHash == hash,
+            let cacheLastModified = entry["last_modified"] as? Int,
+            cacheLastModified == Int(lastModified.timeIntervalSinceReferenceDate),
             let violations = entry["violations"] as? [[String: Any]] else {
                 lock.unlock()
                 return nil

Source/swiftlint/Extensions/LinterCache+CommandLine.swift

@@ -16,12 +16,12 @@ extension LinterCache {
             return nil
         }
 
-        let configurationHash = configuration.hash
+        let configurationDescription = configuration.cacheDescription
         let cache: LinterCache
         do {
-            cache = try LinterCache(contentsOf: url, configurationHash: configurationHash)
+            cache = try LinterCache(contentsOf: url, configurationDescription: configurationDescription)
         } catch {
-            cache = LinterCache(configurationHash: configurationHash)
+            cache = LinterCache(configurationDescription: configurationDescription)
         }
 
         return cache
@@ -50,7 +50,7 @@ private func defaultCacheURL(options: LintOptions) -> URL {
     #if os(Linux)
         let baseURL = URL(fileURLWithPath: "/var/tmp/")
     #else
-        let baseURL = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask)[0]
+        let baseURL = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)[0]
     #endif
 
     let fileName = String(rootPath.hash) + ".json"